Combination tool cart and heater



April 15 1924.

I 1,490,564 W. R. HOFFMAN ET AL COMBINATION TOOL CART AND HEATER Filed June 20. 1919 I 2 Sheeta-Sheet .1

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lit. HOFFMAN AND CLARENCE A. OTT, OE CLEVELAND, OHIO;

COMBINATION TOOL CART AND HEATER.

Application filed June 20, 1919. Serial No. 305,716.

To all whom it may concern:

Be it known that we, (1) WALTER R. Horriuarr and (2) Cannsrrcn A. Orr, cititens of the United States, residing at Cleveland, in the coun y of Cuyahoga and State of Ohio, have invented a certain new and useful Improvement in Combination Tool Carts and Heaters, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings.

This invention relates to pavers equipment in the nature of a combined tool cart and furnace in which the paving implements, lanterns, and other articles needed in road construction may be conveniently transported from place to place and'wherein the rubbing irons used in smoothing down asphalt paving, shovels for handling the material, etc, maybe heated. i

The objects are toprovide a conveyance of simple construction, preferably in the form of a trailer that may be coupled to a suitable draft vehicle and whereon there is supported in convenient and compact arrangement a furnace and tool box, the latter being so shaped as to receive implements of a length nearly equal to that of the conveyance and from which the implements may be easily removed and transferred to the furnace for heating; to space the tool compartment from the furnace so as to protect its walls from excessive heat and to permit a supply of air to the furnace for the purpose of, promoting combustion; to provide a convenient regulator for controlling the supply of air to the rnace; to construct the furnace so that access to its interior may be had through thetop and sides thereof to accommodate the variety of articles required to be heated; and to provide a folding support for the handles of the tools while being heated and which may be folded down in compact form when not 1n use.

Generall stated the invention consists of a vehicle of suitable constructlon on the chassis whereof is mounted a rectangular frame hearing at one corner a furnace, and

throughout practically the remainder of its area a tool box, the tool box accordingly being la-shaped. The part extending alongside the furnace opens into the main compartment so that implements of a length substantially equal to that of the convoy ance may be accommodated. The walls of the tool box adjacent the furnace are spaced from the furnace walls in order to prevent undue heating of the former walls and to provide an air supply for the furnace. Situated in the tool compartment and well removed fromthe heat of the furnace is a fuel tankhaving communicative connection with the burner of the furnace and equipped with a pump for placing the fuel under pressure, the tool compartment having a door through which access may be had to the tank. The furnace hasdoors or openings in its top and exposed sides to permit such articles as tar buckets to be low cred through the top into proximity to the burner and to permit tools to be placed in the furnace in positions most convenient to the workmen. The furnace is further equipped with a folding tool support on which the handles of the rubbing irons or the like may rest while the irons are being heated and which may be folded down out of the way when not in use. Suitable slide doors are provided for regulating the supply of air to the burner.

For a more detailed description of the invention, reference may be had to the accompanying drawings wherein Fig. 1 is a perspective view of our combined furnace and tool cart; Fig. 2 is a sectional plan; Fig 3 a longitudinal section on the correspondingly numbered line of Fig. 2; and Fig. f a section on line 4-4 of Fig.3.

We may employ for the foundation of our structure a chassis 3 that is supported through springs a from axles 5, one of which. may be provided with steering knuckles, as suggested at 6, so that the conveyance may properly follow the draft vehicle to which it is coupled. A substantial frame 7 built up of longitudinal and transverse channel beams surmounts the chassis 3, and upon this frame is supported a tool box or chest 9 and furnace 10. The tool box (according to our present design) ex tends from one end of the supporting frame to slightly beyond its longitudinal center, the same being of a width throughout such extent, substantially equal to the tread of the vehicle. An extension 9 of the tool box continues along one side of the frame entirely to its opposite end. The furnace is supported by the corner of the frame unoccupied by the tool box and its walls are spaced a suitable distance from those of the tool box to provide an air gap therebetween.

The main part of the tool box is equipped with covers 12, and the extension 9 thereof with a cover 12 At its rear end the top wall of the tool box has an opening normally closed by a cover 13 and through which opening access may be had to a fuel tank 14 that is situated within the tool compartment at the end opposite the furnace. A fuel supply tube 15 leads from the tank to a burner 16 inside the furnace. The furnace is preferably constructed of an outer metal shell 18 and a liner 19 ofsuitable refractory material. The wall to the rear of burner 16 has an opening 20 through which air is supplied to the burner in a quantity dependent upon the adjustment of the slide doors 21 that are carried by said wall. The fuel tank is equipped with a suitable pressure pump the handle of which is indicated at 24 so that the fuel may be fed to the burner under pressure. When it is necessary to supply the tank with fuel or air the workman may reach the same by standing on a step 25 that is supported by the adjacent end of the conveyance and by opening the cover 13.

The exposed end of the furnace, i, e., the one opposite the burner, has an opening 27 through which implements to be heated may be inserted, the handles of the implements during the heating operation being permitted to rest upon a support 28 that is in the form of a yoke having its ends pivoted at 29 to the side walls of the furnace, the support being adapted to be held in operative position by means of braces 30 that are pivoted to the cross member of the yoke and arranged to have their ends set within sockets 31 that are carried by the structure. By disengaging the braces from the sockets the support may be allowed to drop down alongside the end of the fur nace and thus shorten the overall dimension of the conveyance. The exposed side wall of the furnace has a door 33 that may be lowered and held. in a substantially horizontal position by chains 34 so that shovels and the like, which require heating, may be placed in through the side of the furnace with their handles resting upon the door. A removable cover 36 closes an open ing 37 in the top wall of the furnace through. which a bucket of tar or the like may be lowered into the furnace for the purpose of heating it.

The walls of the tool box are formed at 0 to provide clearance for the wheels.

From the foregoing description it will be seen that our invention produces a compact apparatus of maximum capacity that meets practically all the requirements of the paver in the way of providing transportation for his equipment and heat for his implements.

Having thus described our invention, what we claim is 1. A portable furnace comprising a vehicle chassis, a furnace positioned adjacent one end of said chassis, a source of fuel supply located adjacent the opposite end of said chassis, a connection between said fuel supply and said furnace, and a housing enclosing said fuel supply, said housing extending along two sides of said furnace.

2. A, portable furnace comprising 8. vehicle chassis, a furnace positioned adjacent one end of said chassis, a fuel supply tank located adjacent the opposite end of said chassis and operatively connected to said furnace, and a housing enclosing said fuel supply tank and extending along two sides of said furnace, said housing being spaced from said furnace along each of said sides to provide an air space therebetween.

3. A portable furnace, comprising a vehicle chassis, a furnace mounted on said chassis and having a fuel burner positioned therein, a fuel supply tank positioned on said chassis and spaced from said furnace,

a connection between said tank and said burner, said furnace having one end thereof open to the atmosphere, and means for opening one side of said furnace to the atmosphere.

4. A portable furnace comprising a vehicle chassis, a furnace mounted onsaid chassis and having a fuel burner positioned therein, a fuel supply tank positioned -on said chassis and operatively connected to said burner, one end of said furnace being open to the atmosphere, means for opening one side of said furnace to the atmosphere, and additional means for of said furnace to the atmosphere.

In testimony whereof, we hereunto afiix our signatures.

WALTER R. HOFFMAN. CLARENCE A. OTT.

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